fix docs in KeyedVectors
fix docs in KeyedVectors

RaRe-Technologies/gensim,piskvorky/gensim,gojomo/gensim,RaRe-Technologies/gensim,gojomo/gensim,RaRe-Technologies/gensim,RaRe-Technologies/gensim,gojomo/gensim,piskvorky/gensim,piskvorky/gensim,gojomo/gensim